try to make gh more like travis

.github/workflows/build.yml

@@ -3,10 +3,10 @@ name: Build
 on: [push, pull_request]
 
 env: 
-  KALEIDOSCOPE_ETC_DIR: $(GITHUB_WORKSPACE)/etc
-  KALEIDOSCOPE_BUILDER_DIR: $(GITHUB_WORKSPACE)/bin
-  ARDUINO_DIRECTORIES_USER: $(GITHUB_WORKSPACE)/.arduino/user
-  BOARD_HARDWARE_PATH: $(ARDUINO_DIRECTORIES_USER)/hardware
+  KALEIDOSCOPE_ETC_DIR: ${{ github.workspace }}/etc
+  KALEIDOSCOPE_BUILDER_DIR: ${{ github.workspace }}/bin
+  ARDUINO_DIRECTORIES_USER: ${{ github.workspace }}/.arduino/user
+  BOARD_HARDWARE_PATH: ${{ github.workspace }}/.arduino/user/hardware
 jobs:
   smoke-sketches:
     runs-on: ubuntu-latest
@@ -15,7 +15,7 @@ jobs:
 
 ## We delete the Bundle's version of Kaleidoscope, and symlink ourselves in.
 ## This makes sure we're using the current version of the library.
-    - run: git clone --depth 1 --recurse-submodules=build-tools --recurse-submodules=toolchain --recurse-submodules=avr/libraries/ --jobs 16 --shallow-submodules git://github.com/keyboardio/Kaleidoscope-Bundle-Keyboardio $ARDUINO_DIRECTORIES_USER/hardware/keyboardio
+    - run: git clone --depth 1 --recurse-submodules=build-tools --recurse-submodules=toolchain --recurse-submodules=avr/libraries/ --jobs 16 --shallow-submodules git://github.com/keyboardio/Kaleidoscope-Bundle-Keyboardio $ARDUINO_DIRECTORIES_USER}/hardware/keyboardio
     # - run: make adjust-git-timestamps
     - run: make install-arduino-cli
     - run: make configure-arduino-cli